Makina Opangira Lock (omwe ndi Windlass Bone Machine) ndi makina omwe amagwiritsidwa ntchito kwambiri komanso achikhalidwe omwe amagwiritsidwa ntchito popanga machubu amphepo. Komabe, zinthu zathu zakonzedwa kutengera kupanga kwachikhalidwe, komanso kuyang'ana kwambiri makasitomala, chifukwa cha kusintha kokha ntchito zosiyanasiyana, zomwe zimatha kuthetsa vuto losintha ma rollers ndi manja. Vuto lokhalo kwa inu ndikusankha roller yomwe mungasankhe. Ndi kapangidwe kapadera ka gawo lopindika ndi ma alloy-rollers okhazikika, imatha kusunga malo ogwirira ntchito ndikutsimikizira moyo wake wonse. Kupatula apo, zinthu zathu zaphatikiza ntchito zingapo kuti ziwonjezere magwiridwe antchito, ndipo zayikidwa ndi ma bearing ozungulira olimba komanso okhazikika, omwe angatsimikizire kwambiri kulondola ndi kulondola. Ndi kulemera koyenera, kusavuta kuyenda komanso kusintha malo osiyanasiyana ogwirira ntchito, zinthu zathu zatchuka kwambiri pamsika wapadziko lonse lapansi.